STOP AND START SYSTEM(for 2WW) TERMINALS OF ECU

  1. ENGINE STOP AND START ECU

    A375785E01

    1. Disconnect the A86, A66 and G87 engine stop and start ECU connectors.

    2. Measure the resistance and voltage according to the value(s) in the table below.

      Terminal No. (Symbol)

      Wiring Color

      Terminal Description

      Condition

      Specified Condition

      A86-1 (BIN2) - Body ground

      R - Body ground

      Battery

      Always

      9.5 to 14 V

      A86-2 (GND2) - Body ground

      W-B - Body ground

      Ground

      Always

      Below 1 Ω

      A86-3 (BIN1) - Body ground

      L - Body ground

      Battery

      Always

      9.5 to 14 V

      A86-8 (GND1) - Body ground

      W-B - Body ground

      Ground

      Always

      Below 1 Ω

      A66-1 (+B) - Body ground

      B - Body ground

      Power source of engine stop and start ECU

      Ignition switch ON

      9.5 to 14 V

      A66-6 (DGND) - Body ground

      W-B - Body ground

      Ground

      Always

      Below 1 Ω

      A66-10 (NE) - Body ground

      P - Body ground

      Engine speed signal from ECM

      Always

      10 kΩ or higher

      G87-13 (CANH) - Body ground

      LG - Body ground

      CAN communication

      Always

      200 Ω or higher

      G87-14 (CANL) - Body ground

      W - Body ground

      CAN communication

      Always

      200 Ω or higher

      G87-18 (IG2) - Body ground

      V - Body ground

      Ignition switch signal

      Ignition switch ON

      9.5 to 14 V

      G87-19 (ACC) - Body ground

      for LHD: L - Body ground

      for RHD: W - Body ground

      Ignition switch signal

      Ignition switch ACC

      9.5 to 14 V

      G87-21 (IG1) - Body ground

      L - Body ground

      Ignition switch signal

      Ignition switch ON

      9.5 to 14 V

    3. Reconnect the A86, A66 and G87 engine stop and start ECU connectors.

    4. Measure the resistance and voltage according to the value(s) in the table below.

      Terminal No. (Symbol)

      Wiring Color

      Terminal Description

      Condition

      Specified Condition

      A66-3 (BRE2) - Body ground

      G - Body ground

      Ground (vacuum sensor assembly)

      Always

      Below 1 Ω

      A66-7 (BNT1) - A66-6 (DGND)

      B - W-B

      Engine hood courtesy switch (Hood lock assembly) signal

      • Ignition switch ON

      • Engine stopped

      • Engine hood closed

      0 to 1.5 V

      • Ignition switch ON

      • Engine stopped

      • Engine hood open

      8 to 14 V

      A66-8 (TMN) - A66-25 (TME2)

      L - BR

      Neutral position sensor (Neutral position switch) signal

      • Ignition switch ON

      • Shift lever in neutral

      2.7 to 4.3 V

      • Ignition switch ON

      • Shift lever in any other than neutral

      0.7 to 1.9 V

      A66-10 (NE) - A66-6 (DGND)

      P - W-B

      Engine speed signal from ECM

      Idling after engine warmed up

      Pulse generation

      (see waveform 1)

      A66-11 (CLU) - A66-6 (DGND)

      L - W-B

      Clutch start switch assembly (for upper) signal

      • Ignition switch ON

      • Clutch pedal released

      8 to 14 V

      • Ignition switch ON

      • Clutch pedal fully depressed

      Below 1.5 V

      A66-13 (PB) - A66-3 (BRE2)

      SB - G

      Vacuum sensor assembly signal

      • Ignition switch ON

      • Absolute pressure of 40 kPa (300 mmHg, 11.8 in.Hg) applied to vacuum sensor assembly

      1.6 to 2.0 V

      • Ignition switch ON

      • Absolute pressure of 60 kPa (450 mmHg, 17.7 in.Hg) applied to vacuum sensor assembly

      2.2 to 2.6 V

      • Ignition switch ON

      • Atmospheric pressure applied to vacuum sensor assembly

      3.4 to 3.8 V

      A66-14 (BRVC) - A66-6 (DGND)

      L - W-B

      Vacuum sensor assembly power supply

      • Ignition switch ON

      • Engine stopped

      4.5 to 5.5 V

      A66-17 (CLL) - A66-6 (DGND)

      W - W-B

      Clutch start switch assembly (for lower) signal

      • Ignition switch ON

      • Clutch pedal released

      8 to 14 V

      • Ignition switch ON

      • Clutch pedal fully depressed

      Below 1.5 V

      A66-21 (STA) - A66-6 (DGND)

      LG - W-B

      Starter pinion operation signal

      Cranking

      6.0 V or more

      A66-26 (TMVC) - A66-6 (DGND)

      G - W-B

      Neutral position sensor (Neutral position switch) power supply

      • Ignition switch ON

      • Engine stopped

      4.5 to 5.5 V

      G87-1 (IG31) - A66-6 (DGND)

      L - W-B

      Backup boost converter signal

      Ignition switch ON

      10.5 to 16 V

      G87-2 (B41) - A66-6 (DGND)

      SB - W-B

      Backup boost converter signal

      Always

      10.5 to 16 V

      G87-3 (IG41) - A66-6 (DGND)

      L - W-B

      Backup boost converter signal

      Ignition switch ON

      10.5 to 16 V

      G87-4 (CHI)* - A66-6 (DGND)

      R - W-B

      Combustion type power heater system operating signal

      • Ignition switch ON

      • Heater switch assembly on

      9.5 to 14 V

      • Ignition switch ON

      • Heater switch assembly off

      Below 1 V

      G87-5 (ECAN) - A66-6 (DGND)

      R - W-B

      Stop and start system cancel switch signal

      • Ignition switch ON

      • Stop and start system cancel switch pressed

      0 to 1.5 V

      • Ignition switch ON

      • Stop and start system cancel switch not press

      8 to 14 V

      G87-6 (IG11) - A66-6 (DGND)

      L - W-B

      Backup boost converter signal

      Ignition switch ON

      10.5 to 16 V

      G87-10 (IG12) - A66-6 (DGND)

      P - W-B

      Backup boost converter signal

      Ignition switch ON

      10.5 to 16 V

      G87-12 (B42) - A66-6 (DGND)

      SB - W-B

      Backup boost converter signal

      Always

      10.5 to 16 V

      G87-18 (IG2) - A66-6 (DGND)

      V - W-B

      Ignition switch signal

      Ignition switch ACC

      Below 1 V

      Ignition switch ON

      9.5 to 14 V

      G87-19 (ACC) - A66-6 (DGND)

      for LHD: L - W-B

      for RHD: W - W-B

      Ignition switch signal

      Ignition switch off

      Below 1 V

      Ignition switch ACC

      9.5 to 14 V

      G87-21 (IG1) - A66-6 (DGND)

      L - W-B

      Ignition switch signal

      Ignition switch ACC

      Below 1 V

      Ignition switch ON

      9.5 to 14 V

      G87-24 (AC41) - A66-6 (DGND)

      G - W-B

      Backup boost converter signal

      Ignition switch ACC

      10.5 to 16 V

      • *: w/ Combustion Type Power Heater System

    5. A318633E03

      Waveform 1

      Item

      Content

      Tester Connection

      A66-10 (NE) - A66-6 (DGND)

      Tool Setting

      5 V/DIV., 2 ms./DIV.

      Condition

      Idling after engine warmed up